Microsoft Test Manager is unable to initialize the Test Agent Installer service on machine: {0}. Additional Information: ...

Microsoft Test Manager is unable to initialize the Test Agent Installer service on machine: {0}. Additional Information: {1}.  Note that in case the machine has Microsoft Windows XP or Windows 2003 operating system then follow the steps mentioned at http://go.microsoft.com/fwlink/?LinkID=247269&clcid=0x409 to install/configure the test agent. Otherwise confirm that user whose credentials have been provided on the Machines wizard page is a member of the Administrators group on the machine, and then try the operation again.